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Finding the Fourth Proportional to 670.80, 924.36 and 495.84

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Solution

The fourth proportional to 670.80, 924.36 and 495.84 is: 683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.80 : 924.36 = 495.84 : x
  2. Step 2: Convert to fraction form
    670.80/924.36 = 495.84/x
  3. Step 3: Cross multiply
    670.80x = 924.36 × 495.84
  4. Step 4: Simplify right side
    670.80x = 458,334.66
  5. Step 5: Solve for x
    x = 458,334.66/670.80
  6. Step 6: Final answer
    x = 683.27

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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.