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Finding the Fourth Proportional to 899.82, 1,242.23 and 568.76

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Solution

The fourth proportional to 899.82, 1,242.23 and 568.76 is: 785.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.82 : 1,242.23 = 568.76 : x
  2. Step 2: Convert to fraction form
    899.82/1,242.23 = 568.76/x
  3. Step 3: Cross multiply
    899.82x = 1,242.23 × 568.76
  4. Step 4: Simplify right side
    899.82x = 706,521.68
  5. Step 5: Solve for x
    x = 706,521.68/899.82
  6. Step 6: Final answer
    x = 785.18

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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.