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Finding the Fourth Proportional to 587.55, 810.17 and 401.15

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Solution

The fourth proportional to 587.55, 810.17 and 401.15 is: 553.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.55 : 810.17 = 401.15 : x
  2. Step 2: Convert to fraction form
    587.55/810.17 = 401.15/x
  3. Step 3: Cross multiply
    587.55x = 810.17 × 401.15
  4. Step 4: Simplify right side
    587.55x = 324,996.65
  5. Step 5: Solve for x
    x = 324,996.65/587.55
  6. Step 6: Final answer
    x = 553.14

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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.