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Finding the Fourth Proportional to 435.65, 652.28 and 339.65

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Solution

The fourth proportional to 435.65, 652.28 and 339.65 is: 508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.65 : 652.28 = 339.65 : x
  2. Step 2: Convert to fraction form
    435.65/652.28 = 339.65/x
  3. Step 3: Cross multiply
    435.65x = 652.28 × 339.65
  4. Step 4: Simplify right side
    435.65x = 221,545.20
  5. Step 5: Solve for x
    x = 221,545.20/435.65
  6. Step 6: Final answer
    x = 508.54

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Why These Related Problems?

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