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Finding the Fourth Proportional to 899.34, 1,240.71 and 525.68

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Solution

The fourth proportional to 899.34, 1,240.71 and 525.68 is: 725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.34 : 1,240.71 = 525.68 : x
  2. Step 2: Convert to fraction form
    899.34/1,240.71 = 525.68/x
  3. Step 3: Cross multiply
    899.34x = 1,240.71 × 525.68
  4. Step 4: Simplify right side
    899.34x = 652,210.23
  5. Step 5: Solve for x
    x = 652,210.23/899.34
  6. Step 6: Final answer
    x = 725.21

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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.