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Finding the Fourth Proportional to 570.94, 855.63 and 417.22

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Solution

The fourth proportional to 570.94, 855.63 and 417.22 is: 625.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.94 : 855.63 = 417.22 : x
  2. Step 2: Convert to fraction form
    570.94/855.63 = 417.22/x
  3. Step 3: Cross multiply
    570.94x = 855.63 × 417.22
  4. Step 4: Simplify right side
    570.94x = 356,985.95
  5. Step 5: Solve for x
    x = 356,985.95/570.94
  6. Step 6: Final answer
    x = 625.26

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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.