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Finding the Fourth Proportional to 835.32, 1,152.80 and 555.08

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Solution

The fourth proportional to 835.32, 1,152.80 and 555.08 is: 766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.32 : 1,152.80 = 555.08 : x
  2. Step 2: Convert to fraction form
    835.32/1,152.80 = 555.08/x
  3. Step 3: Cross multiply
    835.32x = 1,152.80 × 555.08
  4. Step 4: Simplify right side
    835.32x = 639,896.22
  5. Step 5: Solve for x
    x = 639,896.22/835.32
  6. Step 6: Final answer
    x = 766.05

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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.