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Finding the Fourth Proportional to 1,147.03, 1,720.53 and 377.53

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Solution

The fourth proportional to 1,147.03, 1,720.53 and 377.53 is: 566.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.03 : 1,720.53 = 377.53 : x
  2. Step 2: Convert to fraction form
    1,147.03/1,720.53 = 377.53/x
  3. Step 3: Cross multiply
    1,147.03x = 1,720.53 × 377.53
  4. Step 4: Simplify right side
    1,147.03x = 649,547.39
  5. Step 5: Solve for x
    x = 649,547.39/1,147.03
  6. Step 6: Final answer
    x = 566.29

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Double scale
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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.