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Finding the Fourth Proportional to 730.77, 1,015.45 and 723.27

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Solution

The fourth proportional to 730.77, 1,015.45 and 723.27 is: 1,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.77 : 1,015.45 = 723.27 : x
  2. Step 2: Convert to fraction form
    730.77/1,015.45 = 723.27/x
  3. Step 3: Cross multiply
    730.77x = 1,015.45 × 723.27
  4. Step 4: Simplify right side
    730.77x = 734,444.52
  5. Step 5: Solve for x
    x = 734,444.52/730.77
  6. Step 6: Final answer
    x = 1,005.03

Related Problems

Find fourth proportional to 365.39, 507.73 and 361.64
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 (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.