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Finding the Fourth Proportional to 314.83, 472.70 and 263.80

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Solution

The fourth proportional to 314.83, 472.70 and 263.80 is: 396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.83 : 472.70 = 263.80 : x
  2. Step 2: Convert to fraction form
    314.83/472.70 = 263.80/x
  3. Step 3: Cross multiply
    314.83x = 472.70 × 263.80
  4. Step 4: Simplify right side
    314.83x = 124,695.76
  5. Step 5: Solve for x
    x = 124,695.76/314.83
  6. Step 6: Final answer
    x = 396.08

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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.