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Finding the Fourth Proportional to 529.58, 797.72 and 489.48

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Solution

The fourth proportional to 529.58, 797.72 and 489.48 is: 737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.58 : 797.72 = 489.48 : x
  2. Step 2: Convert to fraction form
    529.58/797.72 = 489.48/x
  3. Step 3: Cross multiply
    529.58x = 797.72 × 489.48
  4. Step 4: Simplify right side
    529.58x = 390,467.99
  5. Step 5: Solve for x
    x = 390,467.99/529.58
  6. Step 6: Final answer
    x = 737.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.