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Finding the Fourth Proportional to 598.61, 897.48 and 320.78

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Solution

The fourth proportional to 598.61, 897.48 and 320.78 is: 480.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.61 : 897.48 = 320.78 : x
  2. Step 2: Convert to fraction form
    598.61/897.48 = 320.78/x
  3. Step 3: Cross multiply
    598.61x = 897.48 × 320.78
  4. Step 4: Simplify right side
    598.61x = 287,889.15
  5. Step 5: Solve for x
    x = 287,889.15/598.61
  6. Step 6: Final answer
    x = 480.93

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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.