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Finding the Fourth Proportional to 570.30, 857.38 and 450.02

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Solution

The fourth proportional to 570.30, 857.38 and 450.02 is: 676.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.30 : 857.38 = 450.02 : x
  2. Step 2: Convert to fraction form
    570.30/857.38 = 450.02/x
  3. Step 3: Cross multiply
    570.30x = 857.38 × 450.02
  4. Step 4: Simplify right side
    570.30x = 385,838.15
  5. Step 5: Solve for x
    x = 385,838.15/570.30
  6. Step 6: Final answer
    x = 676.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.