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Finding the Fourth Proportional to 574.40, 860.66 and 357.52

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Solution

The fourth proportional to 574.40, 860.66 and 357.52 is: 535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.40 : 860.66 = 357.52 : x
  2. Step 2: Convert to fraction form
    574.40/860.66 = 357.52/x
  3. Step 3: Cross multiply
    574.40x = 860.66 × 357.52
  4. Step 4: Simplify right side
    574.40x = 307,703.16
  5. Step 5: Solve for x
    x = 307,703.16/574.40
  6. Step 6: Final answer
    x = 535.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.