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Finding the Fourth Proportional to 670.76, 925.78 and 472.04

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Solution

The fourth proportional to 670.76, 925.78 and 472.04 is: 651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.76 : 925.78 = 472.04 : x
  2. Step 2: Convert to fraction form
    670.76/925.78 = 472.04/x
  3. Step 3: Cross multiply
    670.76x = 925.78 × 472.04
  4. Step 4: Simplify right side
    670.76x = 437,005.19
  5. Step 5: Solve for x
    x = 437,005.19/670.76
  6. Step 6: Final answer
    x = 651.51

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Find fourth proportional to 335.38, 462.89 and 236.02
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Double scale
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1.5x scale

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.