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Finding the Fourth Proportional to 926.11, 1,389.17 and 341.16

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Solution

The fourth proportional to 926.11, 1,389.17 and 341.16 is: 511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.11 : 1,389.17 = 341.16 : x
  2. Step 2: Convert to fraction form
    926.11/1,389.17 = 341.16/x
  3. Step 3: Cross multiply
    926.11x = 1,389.17 × 341.16
  4. Step 4: Simplify right side
    926.11x = 473,927.53
  5. Step 5: Solve for x
    x = 473,927.53/926.11
  6. Step 6: Final answer
    x = 511.74

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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.