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Finding the Fourth Proportional to 951.44, 1,312.70 and 558.36

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Solution

The fourth proportional to 951.44, 1,312.70 and 558.36 is: 770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.44 : 1,312.70 = 558.36 : x
  2. Step 2: Convert to fraction form
    951.44/1,312.70 = 558.36/x
  3. Step 3: Cross multiply
    951.44x = 1,312.70 × 558.36
  4. Step 4: Simplify right side
    951.44x = 732,956.38
  5. Step 5: Solve for x
    x = 732,956.38/951.44
  6. Step 6: Final answer
    x = 770.37

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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.