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Finding the Fourth Proportional to 622.24, 858.88 and 360.32

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Solution

The fourth proportional to 622.24, 858.88 and 360.32 is: 497.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.24 : 858.88 = 360.32 : x
  2. Step 2: Convert to fraction form
    622.24/858.88 = 360.32/x
  3. Step 3: Cross multiply
    622.24x = 858.88 × 360.32
  4. Step 4: Simplify right side
    622.24x = 309,471.64
  5. Step 5: Solve for x
    x = 309,471.64/622.24
  6. Step 6: Final answer
    x = 497.35

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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.