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Finding the Fourth Proportional to 1,124.61, 1,550 and 750.99

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Solution

The fourth proportional to 1,124.61, 1,550 and 750.99 is: 1,035.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.61 : 1,550 = 750.99 : x
  2. Step 2: Convert to fraction form
    1,124.61/1,550 = 750.99/x
  3. Step 3: Cross multiply
    1,124.61x = 1,550 × 750.99
  4. Step 4: Simplify right side
    1,124.61x = 1,164,034.50
  5. Step 5: Solve for x
    x = 1,164,034.50/1,124.61
  6. Step 6: Final answer
    x = 1,035.06

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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.