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Finding the Fourth Proportional to 623.60, 858.85 and 585.33

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Solution

The fourth proportional to 623.60, 858.85 and 585.33 is: 806.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.60 : 858.85 = 585.33 : x
  2. Step 2: Convert to fraction form
    623.60/858.85 = 585.33/x
  3. Step 3: Cross multiply
    623.60x = 858.85 × 585.33
  4. Step 4: Simplify right side
    623.60x = 502,709.28
  5. Step 5: Solve for x
    x = 502,709.28/623.60
  6. Step 6: Final answer
    x = 806.14

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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.