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Finding the Fourth Proportional to 413.34, 570.42 and 258

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Solution

The fourth proportional to 413.34, 570.42 and 258 is: 356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.34 : 570.42 = 258 : x
  2. Step 2: Convert to fraction form
    413.34/570.42 = 258/x
  3. Step 3: Cross multiply
    413.34x = 570.42 × 258
  4. Step 4: Simplify right side
    413.34x = 147,168.36
  5. Step 5: Solve for x
    x = 147,168.36/413.34
  6. Step 6: Final answer
    x = 356.05

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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.