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Finding the Fourth Proportional to 1,580.10, 2,370.18 and 655.65

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Solution

The fourth proportional to 1,580.10, 2,370.18 and 655.65 is: 983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.10 : 2,370.18 = 655.65 : x
  2. Step 2: Convert to fraction form
    1,580.10/2,370.18 = 655.65/x
  3. Step 3: Cross multiply
    1,580.10x = 2,370.18 × 655.65
  4. Step 4: Simplify right side
    1,580.10x = 1,554,008.52
  5. Step 5: Solve for x
    x = 1,554,008.52/1,580.10
  6. Step 6: Final answer
    x = 983.49

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1.5x scale

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.