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Finding the Fourth Proportional to 587.22, 810.02 and 388.06

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Solution

The fourth proportional to 587.22, 810.02 and 388.06 is: 535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.22 : 810.02 = 388.06 : x
  2. Step 2: Convert to fraction form
    587.22/810.02 = 388.06/x
  3. Step 3: Cross multiply
    587.22x = 810.02 × 388.06
  4. Step 4: Simplify right side
    587.22x = 314,334.42
  5. Step 5: Solve for x
    x = 314,334.42/587.22
  6. Step 6: Final answer
    x = 535.29

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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.