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Finding the Fourth Proportional to 1,613.49, 2,420.15 and 573.45

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Solution

The fourth proportional to 1,613.49, 2,420.15 and 573.45 is: 860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.49 : 2,420.15 = 573.45 : x
  2. Step 2: Convert to fraction form
    1,613.49/2,420.15 = 573.45/x
  3. Step 3: Cross multiply
    1,613.49x = 2,420.15 × 573.45
  4. Step 4: Simplify right side
    1,613.49x = 1,387,832.15
  5. Step 5: Solve for x
    x = 1,387,832.15/1,613.49
  6. Step 6: Final answer
    x = 860.14

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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.