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Finding the Fourth Proportional to 1,112.80, 1,666.24 and 598.24

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Solution

The fourth proportional to 1,112.80, 1,666.24 and 598.24 is: 895.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.80 : 1,666.24 = 598.24 : x
  2. Step 2: Convert to fraction form
    1,112.80/1,666.24 = 598.24/x
  3. Step 3: Cross multiply
    1,112.80x = 1,666.24 × 598.24
  4. Step 4: Simplify right side
    1,112.80x = 996,811.42
  5. Step 5: Solve for x
    x = 996,811.42/1,112.80
  6. Step 6: Final answer
    x = 895.77

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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.