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Finding the Fourth Proportional to 631.46, 946.35 and 371.66

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Solution

The fourth proportional to 631.46, 946.35 and 371.66 is: 556.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.46 : 946.35 = 371.66 : x
  2. Step 2: Convert to fraction form
    631.46/946.35 = 371.66/x
  3. Step 3: Cross multiply
    631.46x = 946.35 × 371.66
  4. Step 4: Simplify right side
    631.46x = 351,715.71
  5. Step 5: Solve for x
    x = 351,715.71/631.46
  6. Step 6: Final answer
    x = 556.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.