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Finding the Fourth Proportional to 622.87, 929.03 and 530.53

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Solution

The fourth proportional to 622.87, 929.03 and 530.53 is: 791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.87 : 929.03 = 530.53 : x
  2. Step 2: Convert to fraction form
    622.87/929.03 = 530.53/x
  3. Step 3: Cross multiply
    622.87x = 929.03 × 530.53
  4. Step 4: Simplify right side
    622.87x = 492,873.31
  5. Step 5: Solve for x
    x = 492,873.31/622.87
  6. Step 6: Final answer
    x = 791.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.