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Finding the Fourth Proportional to 608.75, 840.06 and 346.73

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Solution

The fourth proportional to 608.75, 840.06 and 346.73 is: 478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.75 : 840.06 = 346.73 : x
  2. Step 2: Convert to fraction form
    608.75/840.06 = 346.73/x
  3. Step 3: Cross multiply
    608.75x = 840.06 × 346.73
  4. Step 4: Simplify right side
    608.75x = 291,274.00
  5. Step 5: Solve for x
    x = 291,274.00/608.75
  6. Step 6: Final answer
    x = 478.48

Related Problems

Find fourth proportional to 304.38, 420.03 and 173.37
Half scale
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Double scale
Find fourth proportional to 609.75, 841.44 and 347.73
Similar ratio
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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.