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Finding the Fourth Proportional to 1,560.68, 2,341.68 and 740.60

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Solution

The fourth proportional to 1,560.68, 2,341.68 and 740.60 is: 1,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.68 : 2,341.68 = 740.60 : x
  2. Step 2: Convert to fraction form
    1,560.68/2,341.68 = 740.60/x
  3. Step 3: Cross multiply
    1,560.68x = 2,341.68 × 740.60
  4. Step 4: Simplify right side
    1,560.68x = 1,734,248.21
  5. Step 5: Solve for x
    x = 1,734,248.21/1,560.68
  6. Step 6: Final answer
    x = 1,111.21

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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.