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Finding the Fourth Proportional to 623.83, 860.57 and 402.97

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Solution

The fourth proportional to 623.83, 860.57 and 402.97 is: 555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.83 : 860.57 = 402.97 : x
  2. Step 2: Convert to fraction form
    623.83/860.57 = 402.97/x
  3. Step 3: Cross multiply
    623.83x = 860.57 × 402.97
  4. Step 4: Simplify right side
    623.83x = 346,780.60
  5. Step 5: Solve for x
    x = 346,780.60/623.83
  6. Step 6: Final answer
    x = 555.89

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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.