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Finding the Fourth Proportional to 433.61, 653.33 and 358.25

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Solution

The fourth proportional to 433.61, 653.33 and 358.25 is: 539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.61 : 653.33 = 358.25 : x
  2. Step 2: Convert to fraction form
    433.61/653.33 = 358.25/x
  3. Step 3: Cross multiply
    433.61x = 653.33 × 358.25
  4. Step 4: Simplify right side
    433.61x = 234,058.00
  5. Step 5: Solve for x
    x = 234,058.00/433.61
  6. Step 6: Final answer
    x = 539.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.