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Finding the Fourth Proportional to 926.68, 1,278.38 and 632.36

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Solution

The fourth proportional to 926.68, 1,278.38 and 632.36 is: 872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.68 : 1,278.38 = 632.36 : x
  2. Step 2: Convert to fraction form
    926.68/1,278.38 = 632.36/x
  3. Step 3: Cross multiply
    926.68x = 1,278.38 × 632.36
  4. Step 4: Simplify right side
    926.68x = 808,396.38
  5. Step 5: Solve for x
    x = 808,396.38/926.68
  6. Step 6: Final answer
    x = 872.36

Related Problems

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Half scale
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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.