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Finding the Fourth Proportional to 740.77, 1,022.47 and 446.00

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Solution

The fourth proportional to 740.77, 1,022.47 and 446.00 is: 615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.77 : 1,022.47 = 446.00 : x
  2. Step 2: Convert to fraction form
    740.77/1,022.47 = 446.00/x
  3. Step 3: Cross multiply
    740.77x = 1,022.47 × 446.00
  4. Step 4: Simplify right side
    740.77x = 456,015.39
  5. Step 5: Solve for x
    x = 456,015.39/740.77
  6. Step 6: Final answer
    x = 615.60

Related Problems

Find fourth proportional to 370.38, 511.23 and 223.00
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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.