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Finding the Fourth Proportional to 570.36, 854.90 and 433

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Solution

The fourth proportional to 570.36, 854.90 and 433 is: 649.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.36 : 854.90 = 433 : x
  2. Step 2: Convert to fraction form
    570.36/854.90 = 433/x
  3. Step 3: Cross multiply
    570.36x = 854.90 × 433
  4. Step 4: Simplify right side
    570.36x = 370,171.70
  5. Step 5: Solve for x
    x = 370,171.70/570.36
  6. Step 6: Final answer
    x = 649.01

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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.