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Finding the Fourth Proportional to 895.84, 1,235.60 and 659.86

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Solution

The fourth proportional to 895.84, 1,235.60 and 659.86 is: 910.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.84 : 1,235.60 = 659.86 : x
  2. Step 2: Convert to fraction form
    895.84/1,235.60 = 659.86/x
  3. Step 3: Cross multiply
    895.84x = 1,235.60 × 659.86
  4. Step 4: Simplify right side
    895.84x = 815,323.02
  5. Step 5: Solve for x
    x = 815,323.02/895.84
  6. Step 6: Final answer
    x = 910.12

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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.