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Finding the Fourth Proportional to 501.16, 691.56 and 291.27

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Solution

The fourth proportional to 501.16, 691.56 and 291.27 is: 401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.16 : 691.56 = 291.27 : x
  2. Step 2: Convert to fraction form
    501.16/691.56 = 291.27/x
  3. Step 3: Cross multiply
    501.16x = 691.56 × 291.27
  4. Step 4: Simplify right side
    501.16x = 201,432.15
  5. Step 5: Solve for x
    x = 201,432.15/501.16
  6. Step 6: Final answer
    x = 401.93

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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.