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Finding the Fourth Proportional to 504.92, 697.14 and 388.76

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Solution

The fourth proportional to 504.92, 697.14 and 388.76 is: 536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.92 : 697.14 = 388.76 : x
  2. Step 2: Convert to fraction form
    504.92/697.14 = 388.76/x
  3. Step 3: Cross multiply
    504.92x = 697.14 × 388.76
  4. Step 4: Simplify right side
    504.92x = 271,020.15
  5. Step 5: Solve for x
    x = 271,020.15/504.92
  6. Step 6: Final answer
    x = 536.76

Related Problems

Find fourth proportional to 252.46, 348.57 and 194.38
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Double scale
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Similar ratio
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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.