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Finding the Fourth Proportional to 440.19, 607.50 and 378.22

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Solution

The fourth proportional to 440.19, 607.50 and 378.22 is: 521.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.19 : 607.50 = 378.22 : x
  2. Step 2: Convert to fraction form
    440.19/607.50 = 378.22/x
  3. Step 3: Cross multiply
    440.19x = 607.50 × 378.22
  4. Step 4: Simplify right side
    440.19x = 229,768.65
  5. Step 5: Solve for x
    x = 229,768.65/440.19
  6. Step 6: Final answer
    x = 521.98

Related Problems

Find fourth proportional to 220.10, 303.75 and 189.11
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Double scale
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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.