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Finding the Fourth Proportional to 370.32, 510.84 and 239.28

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Solution

The fourth proportional to 370.32, 510.84 and 239.28 is: 330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.32 : 510.84 = 239.28 : x
  2. Step 2: Convert to fraction form
    370.32/510.84 = 239.28/x
  3. Step 3: Cross multiply
    370.32x = 510.84 × 239.28
  4. Step 4: Simplify right side
    370.32x = 122,233.80
  5. Step 5: Solve for x
    x = 122,233.80/370.32
  6. Step 6: Final answer
    x = 330.08

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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.