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Finding the Fourth Proportional to 840.06, 1,156.95 and 734.76

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Solution

The fourth proportional to 840.06, 1,156.95 and 734.76 is: 1,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    840.06 : 1,156.95 = 734.76 : x
  2. Step 2: Convert to fraction form
    840.06/1,156.95 = 734.76/x
  3. Step 3: Cross multiply
    840.06x = 1,156.95 × 734.76
  4. Step 4: Simplify right side
    840.06x = 850,080.58
  5. Step 5: Solve for x
    x = 850,080.58/840.06
  6. Step 6: Final answer
    x = 1,011.93

Related Problems

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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.