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Finding the Fourth Proportional to 1,369, 2,053.84 and 395.08

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Solution

The fourth proportional to 1,369, 2,053.84 and 395.08 is: 592.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369 : 2,053.84 = 395.08 : x
  2. Step 2: Convert to fraction form
    1,369/2,053.84 = 395.08/x
  3. Step 3: Cross multiply
    1,369x = 2,053.84 × 395.08
  4. Step 4: Simplify right side
    1,369x = 811,431.11
  5. Step 5: Solve for x
    x = 811,431.11/1,369
  6. Step 6: Final answer
    x = 592.72

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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.