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Finding the Fourth Proportional to 373.26, 515.16 and 284.87

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Solution

The fourth proportional to 373.26, 515.16 and 284.87 is: 393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.26 : 515.16 = 284.87 : x
  2. Step 2: Convert to fraction form
    373.26/515.16 = 284.87/x
  3. Step 3: Cross multiply
    373.26x = 515.16 × 284.87
  4. Step 4: Simplify right side
    373.26x = 146,752.02
  5. Step 5: Solve for x
    x = 146,752.02/373.26
  6. Step 6: Final answer
    x = 393.16

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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.