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Finding the Fourth Proportional to 1,502.90, 2,254.12 and 407.32

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Solution

The fourth proportional to 1,502.90, 2,254.12 and 407.32 is: 610.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.90 : 2,254.12 = 407.32 : x
  2. Step 2: Convert to fraction form
    1,502.90/2,254.12 = 407.32/x
  3. Step 3: Cross multiply
    1,502.90x = 2,254.12 × 407.32
  4. Step 4: Simplify right side
    1,502.90x = 918,148.16
  5. Step 5: Solve for x
    x = 918,148.16/1,502.90
  6. Step 6: Final answer
    x = 610.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.