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Finding the Fourth Proportional to 1,579.46, 2,368.99 and 655.86

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Solution

The fourth proportional to 1,579.46, 2,368.99 and 655.86 is: 983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.46 : 2,368.99 = 655.86 : x
  2. Step 2: Convert to fraction form
    1,579.46/2,368.99 = 655.86/x
  3. Step 3: Cross multiply
    1,579.46x = 2,368.99 × 655.86
  4. Step 4: Simplify right side
    1,579.46x = 1,553,722.50
  5. Step 5: Solve for x
    x = 1,553,722.50/1,579.46
  6. Step 6: Final answer
    x = 983.70

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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.