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Finding the Fourth Proportional to 1,342.88, 2,014.32 and 897.20

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Solution

The fourth proportional to 1,342.88, 2,014.32 and 897.20 is: 1,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.88 : 2,014.32 = 897.20 : x
  2. Step 2: Convert to fraction form
    1,342.88/2,014.32 = 897.20/x
  3. Step 3: Cross multiply
    1,342.88x = 2,014.32 × 897.20
  4. Step 4: Simplify right side
    1,342.88x = 1,807,247.90
  5. Step 5: Solve for x
    x = 1,807,247.90/1,342.88
  6. Step 6: Final answer
    x = 1,345.80

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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.