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Finding the Fourth Proportional to 389.18, 583.17 and 307.01

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Solution

The fourth proportional to 389.18, 583.17 and 307.01 is: 460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.18 : 583.17 = 307.01 : x
  2. Step 2: Convert to fraction form
    389.18/583.17 = 307.01/x
  3. Step 3: Cross multiply
    389.18x = 583.17 × 307.01
  4. Step 4: Simplify right side
    389.18x = 179,036.11
  5. Step 5: Solve for x
    x = 179,036.11/389.18
  6. Step 6: Final answer
    x = 460.04

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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.