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Finding the Fourth Proportional to 623.88, 934.10 and 418.16

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Solution

The fourth proportional to 623.88, 934.10 and 418.16 is: 626.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.88 : 934.10 = 418.16 : x
  2. Step 2: Convert to fraction form
    623.88/934.10 = 418.16/x
  3. Step 3: Cross multiply
    623.88x = 934.10 × 418.16
  4. Step 4: Simplify right side
    623.88x = 390,603.26
  5. Step 5: Solve for x
    x = 390,603.26/623.88
  6. Step 6: Final answer
    x = 626.09

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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.