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Finding the Fourth Proportional to 623.07, 860.03 and 427.15

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Solution

The fourth proportional to 623.07, 860.03 and 427.15 is: 589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.07 : 860.03 = 427.15 : x
  2. Step 2: Convert to fraction form
    623.07/860.03 = 427.15/x
  3. Step 3: Cross multiply
    623.07x = 860.03 × 427.15
  4. Step 4: Simplify right side
    623.07x = 367,361.81
  5. Step 5: Solve for x
    x = 367,361.81/623.07
  6. Step 6: Final answer
    x = 589.60

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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.