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Finding the Fourth Proportional to 950.92, 1,312.92 and 615.63

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Solution

The fourth proportional to 950.92, 1,312.92 and 615.63 is: 849.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.92 : 1,312.92 = 615.63 : x
  2. Step 2: Convert to fraction form
    950.92/1,312.92 = 615.63/x
  3. Step 3: Cross multiply
    950.92x = 1,312.92 × 615.63
  4. Step 4: Simplify right side
    950.92x = 808,269.86
  5. Step 5: Solve for x
    x = 808,269.86/950.92
  6. Step 6: Final answer
    x = 849.99

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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.