Home / 679.02-936.57-417.18

Finding the Fourth Proportional to 679.02, 936.57 and 417.18

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Solution

The fourth proportional to 679.02, 936.57 and 417.18 is: 575.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.02 : 936.57 = 417.18 : x
  2. Step 2: Convert to fraction form
    679.02/936.57 = 417.18/x
  3. Step 3: Cross multiply
    679.02x = 936.57 × 417.18
  4. Step 4: Simplify right side
    679.02x = 390,718.27
  5. Step 5: Solve for x
    x = 390,718.27/679.02
  6. Step 6: Final answer
    x = 575.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.