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Finding the Fourth Proportional to 484.76, 669.06 and 310.12

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Solution

The fourth proportional to 484.76, 669.06 and 310.12 is: 428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.76 : 669.06 = 310.12 : x
  2. Step 2: Convert to fraction form
    484.76/669.06 = 310.12/x
  3. Step 3: Cross multiply
    484.76x = 669.06 × 310.12
  4. Step 4: Simplify right side
    484.76x = 207,488.89
  5. Step 5: Solve for x
    x = 207,488.89/484.76
  6. Step 6: Final answer
    x = 428.02

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Find fourth proportional to 242.38, 334.53 and 155.06
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Double scale
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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.