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Finding the Fourth Proportional to 358.68, 535.14 and 347.16

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Solution

The fourth proportional to 358.68, 535.14 and 347.16 is: 517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.68 : 535.14 = 347.16 : x
  2. Step 2: Convert to fraction form
    358.68/535.14 = 347.16/x
  3. Step 3: Cross multiply
    358.68x = 535.14 × 347.16
  4. Step 4: Simplify right side
    358.68x = 185,779.20
  5. Step 5: Solve for x
    x = 185,779.20/358.68
  6. Step 6: Final answer
    x = 517.95

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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.