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Finding the Fourth Proportional to 435.96, 653.28 and 339.24

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Solution

The fourth proportional to 435.96, 653.28 and 339.24 is: 508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.96 : 653.28 = 339.24 : x
  2. Step 2: Convert to fraction form
    435.96/653.28 = 339.24/x
  3. Step 3: Cross multiply
    435.96x = 653.28 × 339.24
  4. Step 4: Simplify right side
    435.96x = 221,618.71
  5. Step 5: Solve for x
    x = 221,618.71/435.96
  6. Step 6: Final answer
    x = 508.35

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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.