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Finding the Fourth Proportional to 2,376.52, 3,565 and 645.16

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Solution

The fourth proportional to 2,376.52, 3,565 and 645.16 is: 967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.52 : 3,565 = 645.16 : x
  2. Step 2: Convert to fraction form
    2,376.52/3,565 = 645.16/x
  3. Step 3: Cross multiply
    2,376.52x = 3,565 × 645.16
  4. Step 4: Simplify right side
    2,376.52x = 2,299,995.40
  5. Step 5: Solve for x
    x = 2,299,995.40/2,376.52
  6. Step 6: Final answer
    x = 967.80

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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.