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Finding the Fourth Proportional to 895.80, 1,235.34 and 699.24

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Solution

The fourth proportional to 895.80, 1,235.34 and 699.24 is: 964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.80 : 1,235.34 = 699.24 : x
  2. Step 2: Convert to fraction form
    895.80/1,235.34 = 699.24/x
  3. Step 3: Cross multiply
    895.80x = 1,235.34 × 699.24
  4. Step 4: Simplify right side
    895.80x = 863,799.14
  5. Step 5: Solve for x
    x = 863,799.14/895.80
  6. Step 6: Final answer
    x = 964.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.