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Finding the Fourth Proportional to 1,487.93, 2,231.93 and 500.76

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Solution

The fourth proportional to 1,487.93, 2,231.93 and 500.76 is: 751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.93 : 2,231.93 = 500.76 : x
  2. Step 2: Convert to fraction form
    1,487.93/2,231.93 = 500.76/x
  3. Step 3: Cross multiply
    1,487.93x = 2,231.93 × 500.76
  4. Step 4: Simplify right side
    1,487.93x = 1,117,661.27
  5. Step 5: Solve for x
    x = 1,117,661.27/1,487.93
  6. Step 6: Final answer
    x = 751.15

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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.