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Finding the Fourth Proportional to 954.38, 1,317.16 and 623.77

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Solution

The fourth proportional to 954.38, 1,317.16 and 623.77 is: 860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.38 : 1,317.16 = 623.77 : x
  2. Step 2: Convert to fraction form
    954.38/1,317.16 = 623.77/x
  3. Step 3: Cross multiply
    954.38x = 1,317.16 × 623.77
  4. Step 4: Simplify right side
    954.38x = 821,602.38
  5. Step 5: Solve for x
    x = 821,602.38/954.38
  6. Step 6: Final answer
    x = 860.87

Related Problems

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Half scale
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Double scale
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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.