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Finding the Fourth Proportional to 626.79, 864.95 and 364.79

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Solution

The fourth proportional to 626.79, 864.95 and 364.79 is: 503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.79 : 864.95 = 364.79 : x
  2. Step 2: Convert to fraction form
    626.79/864.95 = 364.79/x
  3. Step 3: Cross multiply
    626.79x = 864.95 × 364.79
  4. Step 4: Simplify right side
    626.79x = 315,518.96
  5. Step 5: Solve for x
    x = 315,518.96/626.79
  6. Step 6: Final answer
    x = 503.39

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1.5x scale

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.