Home / 1,045.15-1,566.79-395.42

Finding the Fourth Proportional to 1,045.15, 1,566.79 and 395.42

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Solution

The fourth proportional to 1,045.15, 1,566.79 and 395.42 is: 592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.15 : 1,566.79 = 395.42 : x
  2. Step 2: Convert to fraction form
    1,045.15/1,566.79 = 395.42/x
  3. Step 3: Cross multiply
    1,045.15x = 1,566.79 × 395.42
  4. Step 4: Simplify right side
    1,045.15x = 619,543.03
  5. Step 5: Solve for x
    x = 619,543.03/1,045.15
  6. Step 6: Final answer
    x = 592.78

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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.