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Finding the Fourth Proportional to 623.30, 858.40 and 544.32

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Solution

The fourth proportional to 623.30, 858.40 and 544.32 is: 749.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.30 : 858.40 = 544.32 : x
  2. Step 2: Convert to fraction form
    623.30/858.40 = 544.32/x
  3. Step 3: Cross multiply
    623.30x = 858.40 × 544.32
  4. Step 4: Simplify right side
    623.30x = 467,242.93
  5. Step 5: Solve for x
    x = 467,242.93/623.30
  6. Step 6: Final answer
    x = 749.63

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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.