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Finding the Fourth Proportional to 1,087.85, 1,501.23 and 590.49

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Solution

The fourth proportional to 1,087.85, 1,501.23 and 590.49 is: 814.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.85 : 1,501.23 = 590.49 : x
  2. Step 2: Convert to fraction form
    1,087.85/1,501.23 = 590.49/x
  3. Step 3: Cross multiply
    1,087.85x = 1,501.23 × 590.49
  4. Step 4: Simplify right side
    1,087.85x = 886,461.30
  5. Step 5: Solve for x
    x = 886,461.30/1,087.85
  6. Step 6: Final answer
    x = 814.87

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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.