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Finding the Fourth Proportional to 951.16, 1,312.68 and 558.24

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Solution

The fourth proportional to 951.16, 1,312.68 and 558.24 is: 770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.16 : 1,312.68 = 558.24 : x
  2. Step 2: Convert to fraction form
    951.16/1,312.68 = 558.24/x
  3. Step 3: Cross multiply
    951.16x = 1,312.68 × 558.24
  4. Step 4: Simplify right side
    951.16x = 732,790.48
  5. Step 5: Solve for x
    x = 732,790.48/951.16
  6. Step 6: Final answer
    x = 770.42

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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.