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Finding the Fourth Proportional to 950.76, 1,312.08 and 531.12

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Solution

The fourth proportional to 950.76, 1,312.08 and 531.12 is: 732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.76 : 1,312.08 = 531.12 : x
  2. Step 2: Convert to fraction form
    950.76/1,312.08 = 531.12/x
  3. Step 3: Cross multiply
    950.76x = 1,312.08 × 531.12
  4. Step 4: Simplify right side
    950.76x = 696,871.93
  5. Step 5: Solve for x
    x = 696,871.93/950.76
  6. Step 6: Final answer
    x = 732.96

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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.