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Finding the Fourth Proportional to 469.36, 648.57 and 358.66

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Solution

The fourth proportional to 469.36, 648.57 and 358.66 is: 495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.36 : 648.57 = 358.66 : x
  2. Step 2: Convert to fraction form
    469.36/648.57 = 358.66/x
  3. Step 3: Cross multiply
    469.36x = 648.57 × 358.66
  4. Step 4: Simplify right side
    469.36x = 232,616.12
  5. Step 5: Solve for x
    x = 232,616.12/469.36
  6. Step 6: Final answer
    x = 495.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.