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Finding the Fourth Proportional to 1,332.42, 1,999.80 and 1,114.35

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Solution

The fourth proportional to 1,332.42, 1,999.80 and 1,114.35 is: 1,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.42 : 1,999.80 = 1,114.35 : x
  2. Step 2: Convert to fraction form
    1,332.42/1,999.80 = 1,114.35/x
  3. Step 3: Cross multiply
    1,332.42x = 1,999.80 × 1,114.35
  4. Step 4: Simplify right side
    1,332.42x = 2,228,477.13
  5. Step 5: Solve for x
    x = 2,228,477.13/1,332.42
  6. Step 6: Final answer
    x = 1,672.50

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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.