Home / 1,011.18-1,395.45-612.77

Finding the Fourth Proportional to 1,011.18, 1,395.45 and 612.77

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Solution

The fourth proportional to 1,011.18, 1,395.45 and 612.77 is: 845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.18 : 1,395.45 = 612.77 : x
  2. Step 2: Convert to fraction form
    1,011.18/1,395.45 = 612.77/x
  3. Step 3: Cross multiply
    1,011.18x = 1,395.45 × 612.77
  4. Step 4: Simplify right side
    1,011.18x = 855,082.92
  5. Step 5: Solve for x
    x = 855,082.92/1,011.18
  6. Step 6: Final answer
    x = 845.63

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.