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Finding the Fourth Proportional to 358.47, 537 and 345.87

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Solution

The fourth proportional to 358.47, 537 and 345.87 is: 518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.47 : 537 = 345.87 : x
  2. Step 2: Convert to fraction form
    358.47/537 = 345.87/x
  3. Step 3: Cross multiply
    358.47x = 537 × 345.87
  4. Step 4: Simplify right side
    358.47x = 185,732.19
  5. Step 5: Solve for x
    x = 185,732.19/358.47
  6. Step 6: Final answer
    x = 518.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.