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Finding the Fourth Proportional to 556.76, 768.33 and 335.63

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Solution

The fourth proportional to 556.76, 768.33 and 335.63 is: 463.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.76 : 768.33 = 335.63 : x
  2. Step 2: Convert to fraction form
    556.76/768.33 = 335.63/x
  3. Step 3: Cross multiply
    556.76x = 768.33 × 335.63
  4. Step 4: Simplify right side
    556.76x = 257,870.76
  5. Step 5: Solve for x
    x = 257,870.76/556.76
  6. Step 6: Final answer
    x = 463.17

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Find fourth proportional to 278.38, 384.17 and 167.81
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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.