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Finding the Fourth Proportional to 730.77, 1,008.48 and 436.33

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Solution

The fourth proportional to 730.77, 1,008.48 and 436.33 is: 602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.77 : 1,008.48 = 436.33 : x
  2. Step 2: Convert to fraction form
    730.77/1,008.48 = 436.33/x
  3. Step 3: Cross multiply
    730.77x = 1,008.48 × 436.33
  4. Step 4: Simplify right side
    730.77x = 440,030.08
  5. Step 5: Solve for x
    x = 440,030.08/730.77
  6. Step 6: Final answer
    x = 602.15

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Find fourth proportional to 365.38, 504.24 and 218.17
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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.