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Finding the Fourth Proportional to 712.76, 983.51 and 433

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Solution

The fourth proportional to 712.76, 983.51 and 433 is: 597.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.76 : 983.51 = 433 : x
  2. Step 2: Convert to fraction form
    712.76/983.51 = 433/x
  3. Step 3: Cross multiply
    712.76x = 983.51 × 433
  4. Step 4: Simplify right side
    712.76x = 425,859.83
  5. Step 5: Solve for x
    x = 425,859.83/712.76
  6. Step 6: Final answer
    x = 597.48

Related Problems

Find fourth proportional to 356.38, 491.76 and 216.50
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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.