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Finding the Fourth Proportional to 434.64, 652.26 and 288.36

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Solution

The fourth proportional to 434.64, 652.26 and 288.36 is: 432.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.64 : 652.26 = 288.36 : x
  2. Step 2: Convert to fraction form
    434.64/652.26 = 288.36/x
  3. Step 3: Cross multiply
    434.64x = 652.26 × 288.36
  4. Step 4: Simplify right side
    434.64x = 188,085.69
  5. Step 5: Solve for x
    x = 188,085.69/434.64
  6. Step 6: Final answer
    x = 432.74

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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.