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Finding the Fourth Proportional to 904.33, 1,248.06 and 624.46

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Solution

The fourth proportional to 904.33, 1,248.06 and 624.46 is: 861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.33 : 1,248.06 = 624.46 : x
  2. Step 2: Convert to fraction form
    904.33/1,248.06 = 624.46/x
  3. Step 3: Cross multiply
    904.33x = 1,248.06 × 624.46
  4. Step 4: Simplify right side
    904.33x = 779,363.55
  5. Step 5: Solve for x
    x = 779,363.55/904.33
  6. Step 6: Final answer
    x = 861.81

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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.