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Finding the Fourth Proportional to 413.52, 570 and 385.96

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Solution

The fourth proportional to 413.52, 570 and 385.96 is: 532.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.52 : 570 = 385.96 : x
  2. Step 2: Convert to fraction form
    413.52/570 = 385.96/x
  3. Step 3: Cross multiply
    413.52x = 570 × 385.96
  4. Step 4: Simplify right side
    413.52x = 219,997.20
  5. Step 5: Solve for x
    x = 219,997.20/413.52
  6. Step 6: Final answer
    x = 532.01

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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.