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Finding the Fourth Proportional to 615.36, 842.73 and 607.26

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Solution

The fourth proportional to 615.36, 842.73 and 607.26 is: 831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.36 : 842.73 = 607.26 : x
  2. Step 2: Convert to fraction form
    615.36/842.73 = 607.26/x
  3. Step 3: Cross multiply
    615.36x = 842.73 × 607.26
  4. Step 4: Simplify right side
    615.36x = 511,756.22
  5. Step 5: Solve for x
    x = 511,756.22/615.36
  6. Step 6: Final answer
    x = 831.64

Related Problems

Find fourth proportional to 307.68, 421.37 and 303.63
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 (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.