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Finding the Fourth Proportional to 569.38, 785.66 and 320.62

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Solution

The fourth proportional to 569.38, 785.66 and 320.62 is: 442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.38 : 785.66 = 320.62 : x
  2. Step 2: Convert to fraction form
    569.38/785.66 = 320.62/x
  3. Step 3: Cross multiply
    569.38x = 785.66 × 320.62
  4. Step 4: Simplify right side
    569.38x = 251,898.31
  5. Step 5: Solve for x
    x = 251,898.31/569.38
  6. Step 6: Final answer
    x = 442.41

Related Problems

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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.