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Finding the Fourth Proportional to 698.76, 964.08 and 436.95

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Solution

The fourth proportional to 698.76, 964.08 and 436.95 is: 602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.76 : 964.08 = 436.95 : x
  2. Step 2: Convert to fraction form
    698.76/964.08 = 436.95/x
  3. Step 3: Cross multiply
    698.76x = 964.08 × 436.95
  4. Step 4: Simplify right side
    698.76x = 421,254.76
  5. Step 5: Solve for x
    x = 421,254.76/698.76
  6. Step 6: Final answer
    x = 602.86

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Find fourth proportional to 349.38, 482.04 and 218.48
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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.