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Finding the Fourth Proportional to 417.33, 624.78 and 307.26

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Solution

The fourth proportional to 417.33, 624.78 and 307.26 is: 460.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.33 : 624.78 = 307.26 : x
  2. Step 2: Convert to fraction form
    417.33/624.78 = 307.26/x
  3. Step 3: Cross multiply
    417.33x = 624.78 × 307.26
  4. Step 4: Simplify right side
    417.33x = 191,969.90
  5. Step 5: Solve for x
    x = 191,969.90/417.33
  6. Step 6: Final answer
    x = 460.00

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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.