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Finding the Fourth Proportional to 950.76, 1,312.27 and 557.91

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Solution

The fourth proportional to 950.76, 1,312.27 and 557.91 is: 770.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.76 : 1,312.27 = 557.91 : x
  2. Step 2: Convert to fraction form
    950.76/1,312.27 = 557.91/x
  3. Step 3: Cross multiply
    950.76x = 1,312.27 × 557.91
  4. Step 4: Simplify right side
    950.76x = 732,127.16
  5. Step 5: Solve for x
    x = 732,127.16/950.76
  6. Step 6: Final answer
    x = 770.04

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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.