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Finding the Fourth Proportional to 620.19, 925.50 and 551.17

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Solution

The fourth proportional to 620.19, 925.50 and 551.17 is: 822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.19 : 925.50 = 551.17 : x
  2. Step 2: Convert to fraction form
    620.19/925.50 = 551.17/x
  3. Step 3: Cross multiply
    620.19x = 925.50 × 551.17
  4. Step 4: Simplify right side
    620.19x = 510,107.84
  5. Step 5: Solve for x
    x = 510,107.84/620.19
  6. Step 6: Final answer
    x = 822.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.