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Finding the Fourth Proportional to 573.78, 860.13 and 330.51

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Solution

The fourth proportional to 573.78, 860.13 and 330.51 is: 495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.78 : 860.13 = 330.51 : x
  2. Step 2: Convert to fraction form
    573.78/860.13 = 330.51/x
  3. Step 3: Cross multiply
    573.78x = 860.13 × 330.51
  4. Step 4: Simplify right side
    573.78x = 284,281.57
  5. Step 5: Solve for x
    x = 284,281.57/573.78
  6. Step 6: Final answer
    x = 495.45

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Double scale
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1.5x scale

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.