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Finding the Fourth Proportional to 621.60, 858.62 and 504.01

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Solution

The fourth proportional to 621.60, 858.62 and 504.01 is: 696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.60 : 858.62 = 504.01 : x
  2. Step 2: Convert to fraction form
    621.60/858.62 = 504.01/x
  3. Step 3: Cross multiply
    621.60x = 858.62 × 504.01
  4. Step 4: Simplify right side
    621.60x = 432,753.07
  5. Step 5: Solve for x
    x = 432,753.07/621.60
  6. Step 6: Final answer
    x = 696.19

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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.