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Finding the Fourth Proportional to 768.75, 1,060.68 and 532.31

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Solution

The fourth proportional to 768.75, 1,060.68 and 532.31 is: 734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.75 : 1,060.68 = 532.31 : x
  2. Step 2: Convert to fraction form
    768.75/1,060.68 = 532.31/x
  3. Step 3: Cross multiply
    768.75x = 1,060.68 × 532.31
  4. Step 4: Simplify right side
    768.75x = 564,605.27
  5. Step 5: Solve for x
    x = 564,605.27/768.75
  6. Step 6: Final answer
    x = 734.45

Related Problems

Find fourth proportional to 384.38, 530.34 and 266.15
Half scale
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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.