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Finding the Fourth Proportional to 358.90, 534.05 and 357.68

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Solution

The fourth proportional to 358.90, 534.05 and 357.68 is: 532.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.90 : 534.05 = 357.68 : x
  2. Step 2: Convert to fraction form
    358.90/534.05 = 357.68/x
  3. Step 3: Cross multiply
    358.90x = 534.05 × 357.68
  4. Step 4: Simplify right side
    358.90x = 191,021.23
  5. Step 5: Solve for x
    x = 191,021.23/358.90
  6. Step 6: Final answer
    x = 532.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.