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Finding the Fourth Proportional to 550.98, 822.90 and 474.12

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Solution

The fourth proportional to 550.98, 822.90 and 474.12 is: 708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.98 : 822.90 = 474.12 : x
  2. Step 2: Convert to fraction form
    550.98/822.90 = 474.12/x
  3. Step 3: Cross multiply
    550.98x = 822.90 × 474.12
  4. Step 4: Simplify right side
    550.98x = 390,153.35
  5. Step 5: Solve for x
    x = 390,153.35/550.98
  6. Step 6: Final answer
    x = 708.11

Related Problems

Find fourth proportional to 275.49, 411.45 and 237.06
Half scale
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Double scale
Find fourth proportional to 551.98, 824.39 and 475.12
Similar ratio
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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.