Home / 1,001.15-1,381.54-559.04

Finding the Fourth Proportional to 1,001.15, 1,381.54 and 559.04

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Solution

The fourth proportional to 1,001.15, 1,381.54 and 559.04 is: 771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.15 : 1,381.54 = 559.04 : x
  2. Step 2: Convert to fraction form
    1,001.15/1,381.54 = 559.04/x
  3. Step 3: Cross multiply
    1,001.15x = 1,381.54 × 559.04
  4. Step 4: Simplify right side
    1,001.15x = 772,329.21
  5. Step 5: Solve for x
    x = 772,329.21/1,001.15
  6. Step 6: Final answer
    x = 771.45

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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.