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Finding the Fourth Proportional to 370.16, 512.04 and 288.08

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Solution

The fourth proportional to 370.16, 512.04 and 288.08 is: 398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.16 : 512.04 = 288.08 : x
  2. Step 2: Convert to fraction form
    370.16/512.04 = 288.08/x
  3. Step 3: Cross multiply
    370.16x = 512.04 × 288.08
  4. Step 4: Simplify right side
    370.16x = 147,508.48
  5. Step 5: Solve for x
    x = 147,508.48/370.16
  6. Step 6: Final answer
    x = 398.50

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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.