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Finding the Fourth Proportional to 358.17, 534.48 and 355.47

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Solution

The fourth proportional to 358.17, 534.48 and 355.47 is: 530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.17 : 534.48 = 355.47 : x
  2. Step 2: Convert to fraction form
    358.17/534.48 = 355.47/x
  3. Step 3: Cross multiply
    358.17x = 534.48 × 355.47
  4. Step 4: Simplify right side
    358.17x = 189,991.61
  5. Step 5: Solve for x
    x = 189,991.61/358.17
  6. Step 6: Final answer
    x = 530.45

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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.