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Finding the Fourth Proportional to 895.39, 1,235.65 and 522.60

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Solution

The fourth proportional to 895.39, 1,235.65 and 522.60 is: 721.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.39 : 1,235.65 = 522.60 : x
  2. Step 2: Convert to fraction form
    895.39/1,235.65 = 522.60/x
  3. Step 3: Cross multiply
    895.39x = 1,235.65 × 522.60
  4. Step 4: Simplify right side
    895.39x = 645,750.69
  5. Step 5: Solve for x
    x = 645,750.69/895.39
  6. Step 6: Final answer
    x = 721.19

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Double scale
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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.