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Finding the Fourth Proportional to 904.38, 1,248.60 and 624.51

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Solution

The fourth proportional to 904.38, 1,248.60 and 624.51 is: 862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.38 : 1,248.60 = 624.51 : x
  2. Step 2: Convert to fraction form
    904.38/1,248.60 = 624.51/x
  3. Step 3: Cross multiply
    904.38x = 1,248.60 × 624.51
  4. Step 4: Simplify right side
    904.38x = 779,763.19
  5. Step 5: Solve for x
    x = 779,763.19/904.38
  6. Step 6: Final answer
    x = 862.21

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.