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Finding the Fourth Proportional to 436.40, 652.80 and 358.49

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Solution

The fourth proportional to 436.40, 652.80 and 358.49 is: 536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.40 : 652.80 = 358.49 : x
  2. Step 2: Convert to fraction form
    436.40/652.80 = 358.49/x
  3. Step 3: Cross multiply
    436.40x = 652.80 × 358.49
  4. Step 4: Simplify right side
    436.40x = 234,025.25
  5. Step 5: Solve for x
    x = 234,025.25/436.40
  6. Step 6: Final answer
    x = 536.26

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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.