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Finding the Fourth Proportional to 623.06, 857.88 and 529.62

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Solution

The fourth proportional to 623.06, 857.88 and 529.62 is: 729.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.06 : 857.88 = 529.62 : x
  2. Step 2: Convert to fraction form
    623.06/857.88 = 529.62/x
  3. Step 3: Cross multiply
    623.06x = 857.88 × 529.62
  4. Step 4: Simplify right side
    623.06x = 454,350.41
  5. Step 5: Solve for x
    x = 454,350.41/623.06
  6. Step 6: Final answer
    x = 729.22

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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.