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Finding the Fourth Proportional to 570.17, 854.64 and 407.36

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Solution

The fourth proportional to 570.17, 854.64 and 407.36 is: 610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.17 : 854.64 = 407.36 : x
  2. Step 2: Convert to fraction form
    570.17/854.64 = 407.36/x
  3. Step 3: Cross multiply
    570.17x = 854.64 × 407.36
  4. Step 4: Simplify right side
    570.17x = 348,141.88
  5. Step 5: Solve for x
    x = 348,141.88/570.17
  6. Step 6: Final answer
    x = 610.60

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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.