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Finding the Fourth Proportional to 675.34, 931.49 and 413.48

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Solution

The fourth proportional to 675.34, 931.49 and 413.48 is: 570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.34 : 931.49 = 413.48 : x
  2. Step 2: Convert to fraction form
    675.34/931.49 = 413.48/x
  3. Step 3: Cross multiply
    675.34x = 931.49 × 413.48
  4. Step 4: Simplify right side
    675.34x = 385,152.49
  5. Step 5: Solve for x
    x = 385,152.49/675.34
  6. Step 6: Final answer
    x = 570.31

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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.