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Finding the Fourth Proportional to 440.19, 607.49 and 253.68

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Solution

The fourth proportional to 440.19, 607.49 and 253.68 is: 350.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.19 : 607.49 = 253.68 : x
  2. Step 2: Convert to fraction form
    440.19/607.49 = 253.68/x
  3. Step 3: Cross multiply
    440.19x = 607.49 × 253.68
  4. Step 4: Simplify right side
    440.19x = 154,106.79
  5. Step 5: Solve for x
    x = 154,106.79/440.19
  6. Step 6: Final answer
    x = 350.09

Related Problems

Find fourth proportional to 220.10, 303.74 and 126.84
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Double scale
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Similar ratio
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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.