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Finding the Fourth Proportional to 1,051.38, 1,575.81 and 502.74

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Solution

The fourth proportional to 1,051.38, 1,575.81 and 502.74 is: 753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.38 : 1,575.81 = 502.74 : x
  2. Step 2: Convert to fraction form
    1,051.38/1,575.81 = 502.74/x
  3. Step 3: Cross multiply
    1,051.38x = 1,575.81 × 502.74
  4. Step 4: Simplify right side
    1,051.38x = 792,222.72
  5. Step 5: Solve for x
    x = 792,222.72/1,051.38
  6. Step 6: Final answer
    x = 753.51

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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.