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Finding the Fourth Proportional to 692.76, 956.16 and 576.12

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Solution

The fourth proportional to 692.76, 956.16 and 576.12 is: 795.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.76 : 956.16 = 576.12 : x
  2. Step 2: Convert to fraction form
    692.76/956.16 = 576.12/x
  3. Step 3: Cross multiply
    692.76x = 956.16 × 576.12
  4. Step 4: Simplify right side
    692.76x = 550,862.90
  5. Step 5: Solve for x
    x = 550,862.90/692.76
  6. Step 6: Final answer
    x = 795.17

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Find fourth proportional to 346.38, 478.08 and 288.06
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.