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Finding the Fourth Proportional to 951.56, 1,312.73 and 558.41

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Solution

The fourth proportional to 951.56, 1,312.73 and 558.41 is: 770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.56 : 1,312.73 = 558.41 : x
  2. Step 2: Convert to fraction form
    951.56/1,312.73 = 558.41/x
  3. Step 3: Cross multiply
    951.56x = 1,312.73 × 558.41
  4. Step 4: Simplify right side
    951.56x = 733,032.20
  5. Step 5: Solve for x
    x = 733,032.20/951.56
  6. Step 6: Final answer
    x = 770.35

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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.