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Finding the Fourth Proportional to 1,305.11, 1,957.67 and 524.88

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Solution

The fourth proportional to 1,305.11, 1,957.67 and 524.88 is: 787.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.11 : 1,957.67 = 524.88 : x
  2. Step 2: Convert to fraction form
    1,305.11/1,957.67 = 524.88/x
  3. Step 3: Cross multiply
    1,305.11x = 1,957.67 × 524.88
  4. Step 4: Simplify right side
    1,305.11x = 1,027,541.17
  5. Step 5: Solve for x
    x = 1,027,541.17/1,305.11
  6. Step 6: Final answer
    x = 787.32

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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.