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Finding the Fourth Proportional to 623.54, 860.15 and 475.92

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Solution

The fourth proportional to 623.54, 860.15 and 475.92 is: 656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.54 : 860.15 = 475.92 : x
  2. Step 2: Convert to fraction form
    623.54/860.15 = 475.92/x
  3. Step 3: Cross multiply
    623.54x = 860.15 × 475.92
  4. Step 4: Simplify right side
    623.54x = 409,360.21
  5. Step 5: Solve for x
    x = 409,360.21/623.54
  6. Step 6: Final answer
    x = 656.52

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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.