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Finding the Fourth Proportional to 430.76, 594.24 and 255.98

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Solution

The fourth proportional to 430.76, 594.24 and 255.98 is: 353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.76 : 594.24 = 255.98 : x
  2. Step 2: Convert to fraction form
    430.76/594.24 = 255.98/x
  3. Step 3: Cross multiply
    430.76x = 594.24 × 255.98
  4. Step 4: Simplify right side
    430.76x = 152,113.56
  5. Step 5: Solve for x
    x = 152,113.56/430.76
  6. Step 6: Final answer
    x = 353.13

Related Problems

Find fourth proportional to 215.38, 297.12 and 127.99
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Double scale
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Similar ratio
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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.