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Finding the Fourth Proportional to 1,590.18, 2,384.87 and 615.75

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Solution

The fourth proportional to 1,590.18, 2,384.87 and 615.75 is: 923.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.18 : 2,384.87 = 615.75 : x
  2. Step 2: Convert to fraction form
    1,590.18/2,384.87 = 615.75/x
  3. Step 3: Cross multiply
    1,590.18x = 2,384.87 × 615.75
  4. Step 4: Simplify right side
    1,590.18x = 1,468,480.62
  5. Step 5: Solve for x
    x = 1,468,480.62/1,590.18
  6. Step 6: Final answer
    x = 923.47

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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.